./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 702f633b7e7ff05b6cbb070b8858a8adcd841273 .............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 702f633b7e7ff05b6cbb070b8858a8adcd841273 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:20,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:20,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:20,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:20,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:20,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:20,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:20,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:20,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:20,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:20,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:20,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:20,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:20,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:20,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:20,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:20,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:20,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:20,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:20,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:20,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:20,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:20,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:20,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:20,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:20,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:20,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:20,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:20,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:20,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:20,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:20,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:20,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:20,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:20,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:20,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:20,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:20,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:20,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:20,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:20,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:20,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-28 07:43:20,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:20,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:20,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:20,400 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:20,401 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:20,401 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:20,401 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:43:20,401 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:20,402 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:20,402 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:43:20,403 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:43:20,403 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:20,404 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:43:20,404 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:43:20,404 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:43:20,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:43:20,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:43:20,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:20,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:20,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:43:20,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:43:20,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:20,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:20,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:43:20,407 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:43:20,407 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:43:20,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:20,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:20,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:20,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:20,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:20,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:20,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:20,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:20,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:20,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:20,410 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:43:20,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:43:20,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:20,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:20,411 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702f633b7e7ff05b6cbb070b8858a8adcd841273 [2020-11-28 07:43:20,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:20,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:20,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:20,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:20,784 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:20,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2020-11-28 07:43:20,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data/2af52980b/8d06ff60745d47b09f4883313827d50a/FLAG2efff353e [2020-11-28 07:43:21,500 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:21,502 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2020-11-28 07:43:21,528 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data/2af52980b/8d06ff60745d47b09f4883313827d50a/FLAG2efff353e [2020-11-28 07:43:21,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data/2af52980b/8d06ff60745d47b09f4883313827d50a [2020-11-28 07:43:21,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:21,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:21,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:21,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:21,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:21,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:21" (1/1) ... [2020-11-28 07:43:21,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18500a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:21, skipping insertion in model container [2020-11-28 07:43:21,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:21" (1/1) ... [2020-11-28 07:43:21,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:21,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:22,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:22,409 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-11-28 07:43:22,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6312413f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:22, skipping insertion in model container [2020-11-28 07:43:22,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:22,412 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-28 07:43:22,416 INFO L168 Benchmark]: Toolchain (without parser) took 632.44 ms. Allocated memory is still 165.7 MB. Free memory was 137.7 MB in the beginning and 139.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:22,416 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:22,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.57 ms. Allocated memory is still 165.7 MB. Free memory was 137.7 MB in the beginning and 139.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:22,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 629.57 ms. Allocated memory is still 165.7 MB. Free memory was 137.7 MB in the beginning and 139.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:24,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:24,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:24,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:24,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:24,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:24,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:24,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:24,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:24,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:24,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:24,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:24,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:24,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:24,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:24,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:24,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:24,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:24,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:24,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:24,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:24,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:24,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:24,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:24,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:24,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:24,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:24,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:24,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:24,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:24,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:24,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:24,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:24,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:24,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:24,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:24,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:24,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:25,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:25,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:25,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:25,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-28 07:43:25,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:25,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:25,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:25,053 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:25,054 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:25,054 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:25,054 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:25,055 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:25,055 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:25,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:43:25,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:43:25,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:25,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:25,059 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:43:25,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:43:25,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:25,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:25,060 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:43:25,060 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:43:25,060 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:43:25,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:25,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:25,061 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:43:25,061 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:43:25,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:25,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:25,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:25,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:43:25,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:25,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:25,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:25,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:25,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:25,065 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:43:25,065 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:43:25,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:25,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:25,066 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702f633b7e7ff05b6cbb070b8858a8adcd841273 [2020-11-28 07:43:25,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:25,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:25,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:25,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:25,585 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:25,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2020-11-28 07:43:25,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data/e093a9b63/f65f4aeaaf9b4a12a1357237f5e622c6/FLAGdb6114ec3 [2020-11-28 07:43:26,352 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:26,353 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2020-11-28 07:43:26,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data/e093a9b63/f65f4aeaaf9b4a12a1357237f5e622c6/FLAGdb6114ec3 [2020-11-28 07:43:26,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/data/e093a9b63/f65f4aeaaf9b4a12a1357237f5e622c6 [2020-11-28 07:43:26,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:26,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:26,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:26,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:26,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:26,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:26" (1/1) ... [2020-11-28 07:43:26,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11fb5d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:26, skipping insertion in model container [2020-11-28 07:43:26,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:26" (1/1) ... [2020-11-28 07:43:26,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:26,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:27,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:27,239 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-28 07:43:27,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:27,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:27,312 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:27,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:27,551 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:27,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27 WrapperNode [2020-11-28 07:43:27,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:27,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:27,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:27,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:27,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:27,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:27,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:27,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:27,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:27,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:27,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:27,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:27,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:43:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:43:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-28 07:43:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:28,080 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:28,081 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 07:43:28,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:28 BoogieIcfgContainer [2020-11-28 07:43:28,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:28,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:28,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:28,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:28,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:26" (1/3) ... [2020-11-28 07:43:28,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71079be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:28, skipping insertion in model container [2020-11-28 07:43:28,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (2/3) ... [2020-11-28 07:43:28,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71079be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:28, skipping insertion in model container [2020-11-28 07:43:28,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:28" (3/3) ... [2020-11-28 07:43:28,090 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test21-2.i [2020-11-28 07:43:28,106 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:28,122 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:43:28,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:43:28,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:28,186 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 07:43:28,186 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:28,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:28,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:28,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:28,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:28,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-28 07:43:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:43:28,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:28,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:28,218 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 07:43:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash 119383820, now seen corresponding path program 1 times [2020-11-28 07:43:28,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:28,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837833488] [2020-11-28 07:43:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:28,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:43:28,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:28,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:28,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837833488] [2020-11-28 07:43:28,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:28,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-28 07:43:28,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113897328] [2020-11-28 07:43:28,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:43:28,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:28,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:43:28,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:28,577 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 7 states. [2020-11-28 07:43:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:28,813 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-11-28 07:43:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:43:28,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-11-28 07:43:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:28,822 INFO L225 Difference]: With dead ends: 32 [2020-11-28 07:43:28,822 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 07:43:28,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:43:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 07:43:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2020-11-28 07:43:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:43:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-28 07:43:28,855 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2020-11-28 07:43:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:28,856 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 07:43:28,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:43:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-28 07:43:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:43:28,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:28,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:29,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:43:29,077 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 07:43:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:29,078 INFO L82 PathProgramCache]: Analyzing trace with hash 119443402, now seen corresponding path program 1 times [2020-11-28 07:43:29,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:29,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980586016] [2020-11-28 07:43:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:29,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:43:29,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980586016] [2020-11-28 07:43:29,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:29,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:43:29,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532273229] [2020-11-28 07:43:29,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:29,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:29,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:29,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:29,179 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-11-28 07:43:29,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:29,228 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-28 07:43:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:29,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 07:43:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:29,229 INFO L225 Difference]: With dead ends: 29 [2020-11-28 07:43:29,229 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 07:43:29,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 07:43:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-11-28 07:43:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 07:43:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-28 07:43:29,234 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2020-11-28 07:43:29,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:29,234 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-28 07:43:29,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:29,234 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-28 07:43:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:43:29,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:29,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:29,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:43:29,456 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 07:43:29,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:29,457 INFO L82 PathProgramCache]: Analyzing trace with hash 176701704, now seen corresponding path program 1 times [2020-11-28 07:43:29,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:29,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974747697] [2020-11-28 07:43:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:29,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:43:29,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974747697] [2020-11-28 07:43:29,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:29,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:43:29,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343450576] [2020-11-28 07:43:29,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:29,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:29,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:29,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:29,579 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2020-11-28 07:43:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:29,629 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-28 07:43:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:29,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 07:43:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:29,633 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:43:29,633 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 07:43:29,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 07:43:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-11-28 07:43:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:43:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-28 07:43:29,637 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-11-28 07:43:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:29,637 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-28 07:43:29,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-28 07:43:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:43:29,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:29,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:29,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:43:29,854 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 07:43:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash 176701963, now seen corresponding path program 1 times [2020-11-28 07:43:29,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:29,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587114015] [2020-11-28 07:43:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:29,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:43:29,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587114015] [2020-11-28 07:43:29,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:29,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:43:29,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774705669] [2020-11-28 07:43:29,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:43:29,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:29,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:43:29,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:29,950 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2020-11-28 07:43:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:29,984 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-11-28 07:43:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:43:29,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 07:43:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:29,985 INFO L225 Difference]: With dead ends: 26 [2020-11-28 07:43:29,985 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:43:29,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:43:29,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2020-11-28 07:43:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:43:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-28 07:43:29,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2020-11-28 07:43:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:29,989 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-28 07:43:29,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:43:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-28 07:43:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:43:29,989 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:29,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:30,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:43:30,190 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 07:43:30,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:30,191 INFO L82 PathProgramCache]: Analyzing trace with hash -594068823, now seen corresponding path program 1 times [2020-11-28 07:43:30,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:30,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98603093] [2020-11-28 07:43:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:30,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 07:43:30,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:30,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:30,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98603093] [2020-11-28 07:43:30,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:30,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2020-11-28 07:43:30,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319359564] [2020-11-28 07:43:30,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:43:30,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:30,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:43:30,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:43:30,556 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2020-11-28 07:43:31,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:31,239 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-11-28 07:43:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 07:43:31,256 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2020-11-28 07:43:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:31,256 INFO L225 Difference]: With dead ends: 23 [2020-11-28 07:43:31,256 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:43:31,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2020-11-28 07:43:31,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:43:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2020-11-28 07:43:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:43:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 07:43:31,260 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2020-11-28 07:43:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:31,260 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 07:43:31,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:43:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 07:43:31,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:43:31,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:31,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:31,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:43:31,461 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 07:43:31,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:31,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1236264274, now seen corresponding path program 1 times [2020-11-28 07:43:31,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:31,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749482677] [2020-11-28 07:43:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:31,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:43:31,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:31,559 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 07:43:31,565 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:43:31,571 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:43:31,571 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 07:43:31,572 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 07:43:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:31,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:31,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749482677] [2020-11-28 07:43:31,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:31,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-28 07:43:31,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312635774] [2020-11-28 07:43:31,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:43:31,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:31,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:43:31,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:31,656 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2020-11-28 07:43:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:31,870 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-28 07:43:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:43:31,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-11-28 07:43:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:31,872 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:43:31,872 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 07:43:31,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:43:31,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 07:43:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 07:43:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 07:43:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-28 07:43:31,876 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2020-11-28 07:43:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:31,876 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-28 07:43:31,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:43:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-28 07:43:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:43:31,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:31,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:32,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:43:32,091 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 07:43:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:32,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2045610900, now seen corresponding path program 1 times [2020-11-28 07:43:32,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:32,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392553161] [2020-11-28 07:43:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:32,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:43:32,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:32,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:32,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392553161] [2020-11-28 07:43:32,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:32,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:43:32,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389529158] [2020-11-28 07:43:32,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:32,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:32,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:32,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:32,204 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-11-28 07:43:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:32,248 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-11-28 07:43:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:32,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 07:43:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:32,249 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:43:32,249 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:43:32,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:43:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 07:43:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:43:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-28 07:43:32,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2020-11-28 07:43:32,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:32,253 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-28 07:43:32,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-28 07:43:32,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:43:32,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:32,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:32,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:43:32,454 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 07:43:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash 330513232, now seen corresponding path program 1 times [2020-11-28 07:43:32,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:32,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872968834] [2020-11-28 07:43:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:32,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:43:32,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:32,558 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:43:32,558 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-28 07:43:32,559 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:43:32,648 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-11-28 07:43:32,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:43:32,652 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 07:43:32,652 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-11-28 07:43:32,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:43:32,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:43:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:35,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:41,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872968834] [2020-11-28 07:43:41,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:41,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 16 [2020-11-28 07:43:41,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759744823] [2020-11-28 07:43:41,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 07:43:41,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:41,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 07:43:41,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=219, Unknown=4, NotChecked=0, Total=272 [2020-11-28 07:43:41,353 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 17 states. [2020-11-28 07:43:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:44,088 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-11-28 07:43:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:43:44,088 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 11 [2020-11-28 07:43:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:44,089 INFO L225 Difference]: With dead ends: 11 [2020-11-28 07:43:44,089 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:43:44,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=107, Invalid=351, Unknown=4, NotChecked=0, Total=462 [2020-11-28 07:43:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:43:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:43:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:43:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:43:44,090 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-28 07:43:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:44,090 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:43:44,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 07:43:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:43:44,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:43:44,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:43:44,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:44 BoogieIcfgContainer [2020-11-28 07:43:44,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:44,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:44,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:44,298 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:44,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:28" (3/4) ... [2020-11-28 07:43:44,302 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:43:44,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:43:44,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:43:44,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:43:44,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3038339f-874e-4f5c-a60b-6b418e72f004/bin/utaipan/witness.graphml [2020-11-28 07:43:44,377 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:44,378 INFO L168 Benchmark]: Toolchain (without parser) took 17807.33 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 41.0 MB in the beginning and 69.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:44,378 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 60.8 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:44,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 975.82 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 40.9 MB in the beginning and 50.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:44,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.47 ms. Allocated memory is still 77.6 MB. Free memory was 50.2 MB in the beginning and 48.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:44,381 INFO L168 Benchmark]: Boogie Preprocessor took 38.19 ms. Allocated memory is still 77.6 MB. Free memory was 48.1 MB in the beginning and 46.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:44,383 INFO L168 Benchmark]: RCFGBuilder took 413.10 ms. Allocated memory is still 77.6 MB. Free memory was 46.7 MB in the beginning and 57.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:44,384 INFO L168 Benchmark]: TraceAbstraction took 16213.21 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 57.1 MB in the beginning and 71.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:44,384 INFO L168 Benchmark]: Witness Printer took 79.28 ms. Allocated memory is still 94.4 MB. Free memory was 71.2 MB in the beginning and 69.1 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:44,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 60.8 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 975.82 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 40.9 MB in the beginning and 50.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.47 ms. Allocated memory is still 77.6 MB. Free memory was 50.2 MB in the beginning and 48.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.19 ms. Allocated memory is still 77.6 MB. Free memory was 48.1 MB in the beginning and 46.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 413.10 ms. Allocated memory is still 77.6 MB. Free memory was 46.7 MB in the beginning and 57.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16213.21 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 57.1 MB in the beginning and 71.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. * Witness Printer took 79.28 ms. Allocated memory is still 94.4 MB. Free memory was 71.2 MB in the beginning and 69.1 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 779]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 256 SDslu, 161 SDs, 0 SdLazy, 238 SolverSat, 13 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 38 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 128 ConstructedInterpolants, 11 QuantifiedInterpolants, 5212 SizeOfPredicates, 49 NumberOfNonLiveVariables, 353 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...